Push-button switch



E. E. ROSE AND P. L. MARDIS.

PUSH BUTTON SWITCH.

APPLICATION FILED DEC. 13, 1919.

1,425, 97, Patented Aug. 15, 1922.

EDWARD a. ROSE AND PAUL L. MARDIS, on SWISSVALE, PENNsYLvANm, ASSIGNORS'ro WESTINGHOUSE mncrmc a MANUFACTURING COMPANY, A CORPORATION orPENNSYLVANIA.

Specification of Letters Patent.

PUSH-BUTTON SWITCH.

To-all whom it may concern:

' Be it known that we, EDWARD E. Rose, a citizen of the United States,and a resident of Swissvale, in the county of Allegheny and State ofPennsylvania, and PAUL L. MARDIS, a citizen of the United States, and aresident of Swissvale in the county of Allegheny and State oflennsylvania, have invented a new and useful Improvement in Push-ButtonSwitches, of which the followin is a specification.

ur invention relates to electrical switches and particularl topush-button switches.

One object 0 our invention is to provide a device of the above indicatedcharacter that shall be simple and durable in construction, effective inoperation and economical to manufacture.

Another object of our invention is to provide a very compactpush-button-switch structure that shall be particularly adaptable formounting inside a controller casing where space is limited and whereinother electrical devices must be carefully avoided.

In practicing our invention, we provide a tubular insulatin casingdisposed on the inside of a contro ler cover plate and having resilientcontact members disposed across the inner end thereof. An outwardlybiased push-button member disposed in the casing projects through thecover plate and has a co-operating relatively movable contact member atits inner end.

The single figure of the accompanying drawings is a view, partially insection and partially in elevation, of a switch embodying our inventionand showlng the portion of a controller or other plate for which it isespecially adapted.

A cover plate '1, forming a part of the usual well-known electricrailway car or locomotive controller, supports, at its inner side, atubular, preferably metal, member 2 having an annular reduced portion 3around which an insulating tubular member 4'is disposed and to which themember 4 is attached by a screw or screws 5. A bolt 7 extends through alug 6 on the member 2' and also through the plate 1 and an outside platemember 8. A relatively thick insulating partition or annular member 9 isd1s posed in the tubular member 4 adjacent to its inner end 4 and isprovided with an opening 10 into which the inner end 11 of an operatingor'push-button member 12 extends.

The operating member 12 is provided, at an intermediate portion, with aflange 13 which limits its outward movement, the flange 13 being biasedagainst the member 2 by a compression spring 14 positioned around themember 12 between the flange 13 and the partition 9.

l Contact members 15 are diametrically disposed on opposite sides of theopening 10 adjacent to the inner end of the member 4 and are secured inposition by screws 16 that extend through openings in the member 4 andinto the partition member 9 to hold the plarts together. Each contactmember 15, t at is preferably constructed of strap material, is bent tosubstantially inverted -shape having a vertical center portion 17 forattaching it to the member 4 and a relatively long cross portion 18which extends to a position over the opening 10. This constructionpermits the members 15 to have relatively lOIlg resilient lever armswhich extend from bent portions 19 thereof to their positions adjacentto the opening 10.

A screw member 20 consitutes a bridging contact member at the inner endof the member 12. Shoulders 21, on the operating member 12, are adaptedto engage the adjacent surface of the partition member 9 to limit thedownward movement of the member 12.

While we have shown and described a particular form of our invention,changes may be effected therein without departing from the spirit andscope thereof, as set forth in the appended claims.

We claim as our invention:

1. A switch comprising an apertured metal base member, a tubularinsulating member secured thereto, an apertured plug member disposed insaid tubular member,

and a push-button member disposed in said tubular member having areduced portion to provide a shoulder thereon, said reduced portionbeing operable in said plug member and the shoulder functioning to limitthe operation of said push-button member.

2. A' switch comprising a tubular casing,

Patented Aug, 15, 1922.

her at each end y contact member and one f, a push-button member biasedoutwardly. thr

,ionar EDWARD E. ROSE.

'mg said stat of said partitions to said casing.

In testimony whereof, We have hereunto 10 -butsubscribed our names this5th day of De- 5 ton member, a oo-operating stationary concember, 1919.-

an epertured pa-x-tifion mem thereo ough one of said. partition members,a contact member on said push tact member for sand first contact memberon said casing, and a single means for hold- PAUL L. MARDIS.

